The Electoral Reform Society contests that, under the current first-past-the-post voting system, over half of the 650 Westminster seats available at the election are considered "safe". That is, a specific party is likely to be elected, regardless of policies, in 382 constituencies.

The Electoral Reform Society is pushing for a change to the current Westminster voting system. Gordon Brown has promised two referendums on electoral reform in the next 18 months, should Labour win the election. Today's Reality Check investigates Nick Clegg's claim that Labour and the Tories can't be trusted on the issue. Electoral reform could become a key platform during the upcoming election.

Check out the table below showing the safe seats or download the spreadsheet for all of the Electoral Reform Society's research, including analysis of the safety of each constituency.